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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">grekov</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник хирургии имени И.И. Грекова</journal-title><trans-title-group xml:lang="en"><trans-title>Grekov's Bulletin of Surgery</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0042-4625</issn><issn pub-type="epub">2686-7370</issn><publisher><publisher-name>Federal State Budgetary Educational Institution of Higher Education «Academician I.P. Pavlov First St. Petersburg State Medical University» of the Ministry of Healthcare of the Russion Federation, FSBEI HE I.P.Pavlov SPbSMU MOH Russia</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/0042-4625-2024-183-4-15-20</article-id><article-id custom-type="elpub" pub-id-type="custom">grekov-2478</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ВОПРОСЫ ОБЩЕЙ И ЧАСТНОЙ ХИРУРГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROBLEMS OF GENERAL AND SPECIAL SURGERY</subject></subj-group></article-categories><title-group><article-title>Лечение рефрактерных язв прямой кишки аутотрансплантацией стволовых клеток</article-title><trans-title-group xml:lang="en"><trans-title>Treatment of refractory ulcers of the rectum by autologous stem-cell transplantation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6380-137X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Багненко</surname><given-names>С. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Bagnenko</surname><given-names>S. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Багненко Сергей Федорович, доктор медицинских наук, профессор, академик РАН, ректор</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p><p> </p></bio><bio xml:lang="en"><p>Bagnenko Sergey F., Dr. of Sci. (Med.), Professor, Academician of the Russian Academy of Sciences, Rector</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">bagnenko_spb@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7395-7020</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозов</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozov</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Морозов Виктор Петрович, доктор медицинских наук, профессор, зав. кафедрой хирургии общей с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Morozov Victor P., Dr. of Sci. (Med.), Professor, Head of the Department of General Surgery with the Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">vmoroz7@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5152-0001</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Немков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nemkov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Немков Александр Сергеевич, доктор медицинских наук, профессор кафедры хиругии факультетской с курсами лапароскопической и сердечно-сосудистой хирургии с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Nemkov Alexandr S., Dr. of Sci. (Med.), Professor of the Department of Faculty Surgery with Courses of Laparoscopic and Cardiovascular Surgery with the Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">nemk_as@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8432-9182</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каманин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kamanin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каманин Алексей Александрович, кандидат медицинских наук, доцент кафедры общей хирургии с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Kamanin Alexey A., Cand. of Sci. (Med.), Associate Professor of the Department of General Surgery with the Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">alexkamanin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7449-6908</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корольков</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolkov</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Корольков Андрей Юрьевич, доктор медицинских наук, профессор, зав. кафедрой госпитальной хирургии № 2 с клиникой имени академика Ф. Г. Углова, руководитель отдела общей и неотложной хирургии НИИ хирургии и неотложной медицины</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Korolkov Andrey Yu., Dr. of Sci. (Med.), Professor, Head of the Department of Hospital Surgery № 2 with the Clinic named after Academician F. G. Uglov, Head of the Department of General and Emergency Surgery of the Research Institute of Surgery and Emergency Medicine</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">korolkov.a@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8402-0743</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щукина</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchukina</surname><given-names>O. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щукина Оксана Борисовна, доктор медицинских наук, профессор кафедры общей врачебной практики (семейной медицины), зав. кабинетом ВЗК поликлиники с КДЦ</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Shchukina Оksana B., Dr. of Sci. (Med.), Professor of the Department of General Medical Practice (Family Medicine), Head of the Office of Inflammatory Bowel Diseases of the Polyclinic with Consultative and Diagnostic Center</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">burmao@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9874-5155</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Виниченко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vinichenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виниченко Анастасия Анатольевна, врач хирургического отделения № 3 НИИ хирургии и неотложной медицины</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8.</p></bio><bio xml:lang="en"><p>Vinichenko Anastasya A., Doctor of the Surgical Department № 3 of the Research Institute of Surgery and Emergency Medicine</p><p>6-8, L’va Tolstogo str., Saint Petersburg,197022</p></bio><email xlink:type="simple">anastasia_30@live.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Первый Санкт-Петербургский государственный медицинский университет имени академика И. П. Павлова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>16</day><month>07</month><year>2024</year></pub-date><volume>183</volume><issue>4</issue><fpage>15</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Багненко С.Ф., Морозов В.П., Немков А.С., Каманин А.А., Корольков А.Ю., Щукина О.Б., Виниченко А.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Багненко С.Ф., Морозов В.П., Немков А.С., Каманин А.А., Корольков А.Ю., Щукина О.Б., Виниченко А.А.</copyright-holder><copyright-holder xml:lang="en">Bagnenko S.F., Morozov V.P., Nemkov A.S., Kamanin A.A., Korolkov A.Y., Shchukina O.B., Vinichenko A.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.vestnik-grekova.ru/jour/article/view/2478">https://www.vestnik-grekova.ru/jour/article/view/2478</self-uri><abstract><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Повысить качество диагностики и эффективность лечения рефрактерных язв прямой кишки.</p></sec><sec><title>МЕТОДЫ И МАТЕРИАЛЫ</title><p>МЕТОДЫ И МАТЕРИАЛЫ. Проанализированы клинические и биохимические показатели у 39 больных с ранее диагностированными солитарными язвами прямой кишки. Установлено, что у 18 пациентов язвообразование в прямой кишке было обусловлено иммуно-воспалительным процессом по типу болезни Крона. Полученные данные позволили обосновать и применить новый метод лечения язв прямой кишки – местную трансплантацию стволовых клеток костного мозга.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. У всех больных прошли боли, нормализовался стул, отмечено заживление язвенных дефектов.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Трансплантация стволовых клеток костного мозга по механизму действия принципиально отличается от известных способов лечения язв прямой кишки. Метод проявил высокую эффективность и хороший профиль безопасности.</p></sec></abstract><trans-abstract xml:lang="en"><p>The OBJECTIVE was to improve the quality of diagnosis and the effectiveness of treatment of refractory ulcers of the rectum. METHODS AND MATERIALS. We analyzed clinical and biochemical parameters in 39 patients with previously diagnosed solitary ulcers of the rectum. It was proved that in 18 patients, ulceration in the rectum was caused by an autoimmune process, according to the type of Crohn’s disease. The obtained data made it possible to substantiate and apply a new method of treating rectal ulcers – local bone marrow stem cell transplantation. RESULTS. All patients had pain, stool returned to normal, and ulcerative defects were noted to heal. CONCLUSION. Bone marrow stem cell transplantation differs fundamentally in its mechanism of action from known methods of treating rectal ulcers. The method has shown high efficiency and a good safety profile.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>болезнь Крона</kwd><kwd>ВЗК</kwd><kwd>язва прямой кишки</kwd><kwd>стволовые клетки костного мозга</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Crohn’s disease</kwd><kwd>IBD</kwd><kwd>rectal ulcer</kwd><kwd>bone marrow stem cells</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Tjandra J. J., Fazio V. W., Petras R. E. et al. Clinical and pathologic factors associated with delayed diagnosis in solitary rectal ulcer syndrome. Dis Colon Rectum. 1993. Vol. 36, № 2. P. 146‒53. DOI: 10.1007/BF02051170.</mixed-citation><mixed-citation xml:lang="en">Tjandra J. J., Fazio V. W., Petras R. E. et al. Clinical and pathologic factors associated with delayed diagnosis in solitary rectal ulcer syndrome. Dis Colon Rectum. 1993;36(2):146‒53. DOI: 10.1007/BF02051170.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Powell C. R., Lawson J. A., Lindholm P. C. Solitary Rectal ulcer syndrome mimicking perianal Crohn’s disease. Cureus. 2022. Vol. 14, № 4. P. e23733. DOI: 10.7759/cureus.23733.</mixed-citation><mixed-citation xml:lang="en">Powell C. R., Lawson J. A., Lindholm P. C. Solitary Rectal ulcer syndrome mimicking perianal Crohn’s disease. Cureus. 2022;14(4):e23733. DOI: 10.7759/cureus.23733.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Tandon R. K., Atmakuri S. P., Mehra N. K. et al. Is solitary rectal ulcer a manifestation of a systemic disease? J Clin Gastroenterol. 1990. Vol. 12, № 3. P. 286‒90. DOI: 10.1097/00004836-199006000-00010.</mixed-citation><mixed-citation xml:lang="en">Tandon R. K., Atmakuri S. P., Mehra N. K. et al. Is solitary rectal ulcer a manifestation of a systemic disease? J Clin Gastroenterol. 1990; 12(3):286‒90. DOI: 10.1097/00004836-199006000-00010.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Sadeghi A., Biglari M., Forootan M., Adibi P. Solitary rectal ulcer syndrome: a narrative review. Middle East J Dig Dis. 2019. Vol. 11, № 3. P. 129‒134. DOI: 10.15171/mejdd.2019.138</mixed-citation><mixed-citation xml:lang="en">Sadeghi A., Biglari M., Forootan M., Adibi P. Solitary rectal ulcer syndrome: a narrative review. Middle East J Dig Dis. 2019. Vol. 11(3): 129‒134. DOI: 10.15171/mejdd.2019.138</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Шелыгин Ю. А., Ивашкин В. Т., Ачкасов С. И. и др. Клинические рекомендации. Болезнь Крона (К50), взрослые. Колопроктология. 2023. Т. 22, № 3. С. 10‒49.</mixed-citation><mixed-citation xml:lang="en">Shelygin Yu. A., Ivashkin V. T., Achkasov S. I. et al. Clinical guidelines Crohn’s disease (K50), adults. Koloproktologia. 2023;22(3):10‒49. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Eglinton T. W., Barclay M. L., Gearry R. B., Frizelle F. A. The spectrum of perianal Crohn’s disease in a population-based cohort. Dis Colon Rectum. 2012. Vol. 55, № 7. P. 773‒7. DOI: 10.1097/DCR.0b013e31825228b0.</mixed-citation><mixed-citation xml:lang="en">Eglinton T. W., Barclay M. L., Gearry R. B., Frizelle F. A. The spectrum of perianal Crohn’s disease in a population-based cohort. Dis Colon Rectum. 2012;55(7):773‒7. DOI: 10.1097/DCR.0b013e31825228b0.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Danese S., Fiorino G., Mary J. Y. et al. Development of red flags index for early referral of adults with symptoms and signs suggestive of Crohn’s disease: an IOIBD initiative. J Crohns Colitis. 2015. Vol. 9, № 8. P. 601‒6. DOI: 10.1093/ecco-jcc/jjv067.</mixed-citation><mixed-citation xml:lang="en">Danese S., Fiorino G., Mary J. Y. et al. Development of red flags index for early referral of adults with symptoms and signs suggestive of Crohn’s disease: an IOIBD initiative. J Crohns Colitis. 2015;9(8):601‒6. DOI: 10.1093/ecco-jcc/jjv067.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Белоусова Е. А., Шелыгин Ю. А., Ачкасов С. И. и др. Клинико демографические характеристики и лечебные подходы у пациентов с воспалительными заболеваниями кишечника (болезнь Крона, язвенный колит) в РФ. Первые результаты анализа Национального Регистра. Колопроктология. 2023. Т. 22, № 1. С. 65‒82.</mixed-citation><mixed-citation xml:lang="en">Belousova E. A., Shelygin Yu. A., Achkasov S. I. et al. Clinical and demographic features and treatment approaches for inflammatory bowel diseases (crohn’s disease, ulcerative colitis) in the russia. The primery resultsof the analysis of the national register. Koloproktologia. 2023; 22(1):65‒82. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Raghuram A. C., Yu R. P., Lo A. Y. et al. Role of stem cell therapies in treating chronic wounds: A systematic review. World J Stem Cells. 2020. Vol. 12, № 7. P. 659‒675. DOI: 10.4252/wjsc.v12.i7.659.</mixed-citation><mixed-citation xml:lang="en">Raghuram A. C., Yu R. P., Lo A. Y. et al. Role of stem cell therapies in treating chronic wounds: A systematic review. World J Stem Cells. 2020;12(7):659‒675. DOI: 10.4252/wjsc.v12.i7.659.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Colombo F., Cammarata F., Baldi C. et al. Stem cell injection for com plex refractory perianal fistulas in Crohn’s disease: A single center ini tial experience. Front Surg. 2022. Vol. 9. P. 834870. DOI: 10.3389/fsurg.2022.834870.</mixed-citation><mixed-citation xml:lang="en">Colombo F., Cammarata F., Baldi C. et al. Stem cell injection for complex refractory perianal fistulas in Crohn’s disease: A single center initial experience. Front Surg. 2022;9:834870. DOI: 10.3389/fsurg.2022.834870.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Крайнюков П. Е., Арцимович И. В., Зиновьев Е. В. и др. Применение клеточных технологий в лечении ран различной этиологии. Вестник Национального медико-хирургического Центра им. Н. И. Пирогова. 2021. Т. 16, № 2. С. 131‒137.</mixed-citation><mixed-citation xml:lang="en">Krainyukov P. E., Artsimovich I. V., Zinoviev E. V. et al. Using cell technologies in treatment of different etiology wounds: literature review. Bulletin of Pirogov National Medical &amp; Surgical Center. 2021;2(16):131‒137. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Щукина О. Б., Харитонов А. Г., Ботина А. В. и др. Диагностическое и прогностическое значение некоторых морфологических признаков болезни Крона. Доктор.Ру. 2013. № 9(87). С. 82‒88.</mixed-citation><mixed-citation xml:lang="en">Shchukina O. B., Kharitonov A. G., Botina A. V. et al. Diagnostic and prognostic value of some typical morphological changes in crohn’s disease. Doctor.ru. 2013;9(87):82‒88. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Roggenbuck D., Reinhold D., Schierack P. et al. Crohn’s disease spe cific pancreatic antibodies: clinical and pathophysiological challenges. Clin Chem Lab Med. 2014. Vol. 52, № 4. P. 483‒94. DOI: 10.1515/cclm-2013-0801.</mixed-citation><mixed-citation xml:lang="en">Roggenbuck D., Reinhold D., Schierack P. et al. Crohn’s disease specific pancreatic antibodies: clinical and pathophysiological challenges. Clin Chem Lab Med. 2014;52(4):483‒94. DOI: 10.1515/cclm-2013-0801.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Vermeire S., Pierik M., Hlavaty T. et al. Association of organic cation transporter risk haplotype with perianal penetrating Crohn’s disease but not with susceptibility to IBD. Gastroenterology. 2005. Vol. 129, № 6. P. 1845‒53. DOI: 10.1053/j.gastro.2005.10.006.</mixed-citation><mixed-citation xml:lang="en">Vermeire S., Pierik M., Hlavaty T. et al. Association of organic cation transporter risk haplotype with perianal penetrating Crohn’s disease but not with susceptibility to IBD. Gastroenterology. 2005;129(6):1845‒53. DOI: 10.1053/j.gastro.2005.10.006.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Седов В. М., Немков А. С., Афанасьев Б. В. и др. Отдаленные резуль таты клинического применения аутологичной мононуклеарной фракции костного мозга для регенеративной терапии больных с ишеми ческой болезнью сердца. Вестник хирургии им. И. И. Грекова. 2012. Т. 171, № 5. С. 11–19.</mixed-citation><mixed-citation xml:lang="en">Sedov V. M., Nemkov A. S., Afanasiev B. V. et al. Long-term results of clinical application of autologous mono nuclear bone marrow fraction for regeneration therapy of ischemic heart disease patients. Grekov’s Bulletin of Surgery. 2012;5(171):11‒19. (In Russ.)</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
